chrome/browser/memory/oom_memory_details.cc

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/memory/oom_memory_details.h"
   6
   7 #include "base/logging.h"
   8 #include "base/process/process_metrics.h"
   9 #include "base/strings/utf_string_conversions.h"
  10 #include "chrome/browser/memory/oom_memory_details.h"
  11 #include "ui/base/text/bytes_formatting.h"
  12
  13 namespace memory {
  14
  15 // static
  16 void OomMemoryDetails::Log(const std::string& title,
  17                            const base::Closure& callback) {
  18   // Deletes itself upon completion.
  19   OomMemoryDetails* details = new OomMemoryDetails(title, callback);
  20   details->StartFetch(MemoryDetails::FROM_CHROME_ONLY);
  21 }
  22
  23 OomMemoryDetails::OomMemoryDetails(const std::string& title,
  24                                    const base::Closure& callback)
  25     : title_(title), callback_(callback) {
  26   AddRef();  // Released in OnDetailsAvailable().
  27   start_time_ = base::TimeTicks::Now();
  28 }
  29
  30 OomMemoryDetails::~OomMemoryDetails() {
  31 }
  32
  33 void OomMemoryDetails::OnDetailsAvailable() {
  34   base::TimeDelta delta = base::TimeTicks::Now() - start_time_;
  35   // These logs are collected by user feedback reports.  We want them to help
  36   // diagnose user-reported problems with frequently discarded tabs.
  37   std::string log_string = ToLogString();
  38 #if defined(OS_CHROMEOS)
  39   base::SystemMemoryInfoKB memory;
  40   if (base::GetSystemMemoryInfo(&memory) && memory.gem_size != -1) {
  41     log_string += "Graphics ";
  42     log_string += base::UTF16ToASCII(ui::FormatBytes(memory.gem_size));
  43   }
  44 #endif
  45   LOG(WARNING) << title_ << " (" << delta.InMilliseconds() << " ms):\n"
  46                << log_string;
  47   if (!callback_.is_null())
  48     callback_.Run();
  49   // Delete ourselves so we don't have to worry about OomPriorityManager
  50   // deleting us when we're still working.
  51   Release();
  52 }
  53
  54 }  // namespace memory